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MFJ SlimLine -441 Owner's Manual

Econo keyer with memory
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SlimLine ECONO KEYER
with MEMORY
MODEL MFJ-441
OWNER'S MANUAL

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Summary of Contents for MFJ SlimLine MFJ-441

  • Page 1 SlimLine ECONO KEYER with MEMORY MODEL MFJ-441 OWNER'S MANUAL...

  • Page 2: Control Functions

    8. The Direct/Grid-Block Output keying circuit allows keying of grid-block and solid state transmitters. The MFJ-441 can only key one type of transmitter at a time. This is an internal jumper selected option. The unit is factory set to direct keying. To change to grid-block keying the power must be off, then remove the cover by removing the two screws (one on each side) that secure it.

  • Page 3: Installation

    9-volt battery. 2. A 12 VDC power supply may also be used to power the MFJ-441. A 2.1 mm coaxial plug with a positive center and a negative sleeve should be used to power this unit. The MFJ-1312B, an optional 12 volts adapter, is available from MFJ Enterprises, Inc.

  • Page 4: Keyer Operation

    MFJ-441 Instruction Manual SlimLine Econo Keyer Keyer Operation 1. A 9-volt battery or an optional dc adapter may be used to supply power to the keyer. 2. The key paddle should be connected to the Key jack on the rear panel of the unit. A dual pad- dle squeeze key or a single lever key can be used.
  • Page 5 MFJ-441 Instruction Manual SlimLine Econo Keyer Embedded Commands: While in the message recording mode you may use embedded commands for special features. To use an embedded command simply store the multi-character embedded command code within your message. Decrement – decrements the serial number. Serial number 0001 will decrement to 9999, skipping 0000 since it is not used.

  • Page 6: Jumper Settings

    MFJ-441 Instruction Manual SlimLine Econo Keyer Jumper Settings JMP 1 JMP 2 Keying Mode Direct * Invalid Invalid Grid Block JMP 3 Iambic Mode JMP 4 JMP 5 Leading Zeros none JMP 6 JMP 7 Other Zeros JMP 8 Nines...
  • Page 7 7. Squeeze the paddle while turning the power on. The self test starts by sending the copyright message "COPYRIGHT 1996-199X MFJ ENTERPRISES, INC. VERSION X.XX" confirming the audio circuitry is working properly. Release the paddle before the message is finished. For the entire test, the LED should blink once after each operation.
  • Page 8 MFJ-441 Instruction Manual SlimLine Econo Keyer Morse Code Character Set di-dah dah-dit ·– –· dah-di-di-dit dah-dah-dah –··– ––– dah-di-dah-dit di-dah-dah-dit –·–· ·––· dah-di-dit dah-dah-di-dah –·· ––·– di-dah-dit · ·–· di-di-dah-dit di-di-dit ··–· ··· dah-dah-dit ––· – di-di-di-dit di-di-dah ···· ··–...
  • Page 9 MFJ-441 Instruction Manual SlimLine Econo Keyer Schematic...

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